Answer:
-14
Step-by-step explanation:
plug 3 into x
multiply -6 by 3=-18
-18 +4 =-14
Answer: 
Step-by-step explanation:
Let
represents the standard deviation .
Given : Last year, the standard deviation of the ages of the students at UA was 1.8 years.
The researcher are interested in testing to see if there has been a significant change in the standard deviation of the ages of the students at UA.
We know that the null hypothesis always contains the equal signs, then the null and alternative hypothesis is given by :-

Answer:
∠ABE and ∠CBD
∠ABC and ∠EBD
Step-by-step explanation:
we know that
<u>Vertical Angles</u> are the congruent angles opposite each other when two lines cross
so
In this problem we have that
m∠ABE=m∠CBD ----> by vertical angles
m∠ABC=m∠EBD ----> by vertical angles
therefore
The angles that are vertical angles are
∠ABE and ∠CBD
∠ABC and ∠EBD
Answer:
170
Step-by-step explanation:
2{5[7+4(8) -22]}
2{5[7+32 - 22]}
2{5[39 - 22]}
2{5[17]}
2{85}
170
Answer:
B and D
Step-by-step explanation:
first of all, b has nothing so that's automatically out. And it's given that 'ratio of a to b' so it has to be A to B not B to A because that's like saying ; 'which one is 1:2? 1:2 or 2:1?' (obviously 1:2). Hope that makes sense!